34 + 35 + 36 + 37 -14 -15-16 -17
= ( 34 -14) + ( 35 -15) + ( 36-16) + ( 37-17)
= 20 + 20 + 20 +20
= 20.4
= 80
34+35+36+37-14-15-16-17
=(34-14)+(35-15)+(36-16)+(37-17)
=20+20+20+20
=20.4
=80
Chúc bạn học tốt!
#Huyền#
\(34+35+37-14-15-16-17\)
\(=\left(34-14\right)+\left(35-15\right)+\left(36-16\right)+\left(37-17\right)\)
\(=20+20+20+20=80\)
\(34+35+36+37-14-15-16-17\)
\(=\left(34-14\right)+\left(35-15\right)+\left(36-16\right)+\left(37-17\right)\)
\(=20.4\)
\(=80\)